<nz-radio-group [(ngModel)]="radioValue">
  <nz-space nzDirection="vertical">
    <label nz-radio [nzValue]="'a'" *nzSpaceItem>Option A</label>
    <label nz-radio [nzValue]="'b'" *nzSpaceItem>Option B</label>
    <label nz-radio [nzValue]="'c'" *nzSpaceItem>Option C</label>
    <label nz-radio [nzValue]="'more'" *nzSpaceItem>
      More...
      <input
        nz-input
        [(ngModel)]="moreValue"
        *ngIf="radioValue === 'more'"
        name="moreValue"
        style="width: 100px"
      />
    </label>
  </nz-space>
</nz-radio-group>
